Update issue templates

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+## Describe the bug
+A clear and concise description of what the bug is.
+
+## To Reproduce
+**What happened?**
+...
+
+**What kind of request were you trying to perfom? POST, GET, upload task, etc...**
+...
+
+**Did you use macros and EndpointBuilders or good old Endpoint enum?**
+...
+
+## Expected behavior
+A clear and concise description of what you expected to happen.
+
+## Screenshots
+If applicable, add screenshots to help explain your problem.
+
+## Environment setup
+**macOS version:**
+**Xcode version:**
+**Swift version:**
+**SwiftNet version:**
+**Platform:**
+**Dependency manager:**
+
+## Additional context
+Add any other context about the problem here.

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature request
+about: Suggest an idea for this project
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+
+**Describe alternatives you've considered**
+A clear and concise description of any alternative solutions or features you've considered.
+
+**Additional context**
+Add any other context or screenshots about the feature request here.